MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file exhibits characteristics of a phishing lure, employing an image-only design with a clickable action to redirect users to external URLs. The embedded JavaScript stream and the numerous external URIs, including one pointing to 'inwebjor.ru', suggest an attempt to download and execute a second-stage payload or lead the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://inwebjor.ru/uplcv?utm_term=telegram+new+update+2021 PDF link annotation
- http://sherwoodonionfestival.com/ckfinder/userfiles/files/fipazekajonosurifijizu.pdfIn PDF document text
- https://www.domosystem.gr/ckfinder/userfiles/files/kuruvi.pdfIn PDF document text
- http://phukientubepxinh.info/gomsu/sanpham/anh/files/95199643904.pdfIn PDF document text
- http://ambulatorioveterinariocamali.com/userfiles/files/mupakugazanazedevakumuf.pdfIn PDF document text
- https://odlingfamily.com/userfiles/file/24485957491.pdfIn PDF document text
- https://pima-alarms.rs/slicice/file/88339590436.pdfIn PDF document text
- https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b33530cab8---72422163541.pdfIn PDF document text
- http://alt-1c.ru/userfiles/file/japowijiwuzoxexuvujabig.pdfIn PDF document text
- https://cargoservice.pl/cargoservice/userfiles/file/vagawoxesotefamavuxegemek.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/7sci5bnkm2bhn1egml0ffbn6n9/somerujerubebinor.pdfIn PDF document text
- http://playitdirect.ca/ckfinder/uploadfiles/files/vimoxunatoziv.pdfIn PDF document text
- http://lamorenj.com/userfiles/files/74032085134.pdfIn PDF document text
- http://kurumakaitori-one.com/js/upload/files/vazurawefo.pdfIn PDF document text
- https://kawanmto.com/contents/files/21873250860.pdfIn PDF document text
- https://mavibusiness.it/file/57804570500.pdfIn PDF document text
- https://fiscconsulting.com/userfiles/file/biwesifugoguzerekoj.pdfIn PDF document text
- https://smilaxlabs.com/userfiles/files/netumuxise.pdfIn PDF document text
- http://email-database.info/userfiles/file/95066299599.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/61647809267.pdfIn PDF document text
- http://e3edu.vn/public/ckfinder/core/connector/php/connector.phppublic/uploadsfiles/22152770378.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ae5b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE5B | 14216 bytes |
SHA-256: 3e2c1c85e28dc5676757dfecb9ac506548e1ebb6b9f0d4fe4c28efbb01c2ea4a |
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font_01_sfnt_off0000d1e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1E4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e9fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9FB | 10800 bytes |
SHA-256: d93ff419746688fcb6084f3e5f51dd79c0a85b0eac14f04b9b84ae9311046b66 |
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